Trimming attachment for sewing-machines



(NoMovdelu.)y Y 2 Sheets-Sheet l.

'l R. W. RIESS. Y l TRIMMING ATTACHMENT PORST-:WING MACHINES.

`1\ 0.2'59,7"15. Patented June zo, 1882.

N. PETERS. PhowLixnngmpher, wnshingean. D. C.

(No Modem. 2 sheets-sheet 2.

\ R. W.RIESS.

` TRIMMING ATTAGHMBNT PoR SEWING MACHINES. V10.259,775. Patented June2o,1882.

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UNITED' STATES R. WILLIAM RIESS, OF PHILADELPHIA, ASSIGNOR OF ON E-HALF TO JOHN E.

PATENT OFFICE.

JONES, OF GERMANTOWN, PENNSYLVANIA.

TRIMMlNG ATTACHMENT FOR SEWING-MACHINES.

SPECIFICATION forming part f Letters Patent N0. 259,775, dated June 20, 1882.

Y i Application tiled February 15, 1882. (No model.)

To all whom it may concern:

Be it known that I, R. WILLIAM RInss, of the cityand county of Philadelphia, and State ofPennsylvania, have invented an Improvement in Trimming Attachments for Sewing- Maehines, of which the following is a specilication. y.

My invention has reference to trimming or cutting attachments for sewing-machines; and it consists in combining with a sewing-machine a reciprocating cutter` or knife ,which constant-` ly presents new cutting-edges to the fabric to be eut, but does not advance upon or recede from thesaid fabric, and which mechanism constitutes an improvement upon Letters Patent granted to me on June 14, 188.1, and numbered 242,791; further, in combining such a cutter as above specified with two feeds, one of which is located on each side of said cutter; and, finally, in minor details of construction, all of which are fully set forth in the following specification and shown in the accompanying drawings, which form part thereof.

The object `of my invention is to provide means to trim or cut oft' the 'edge of the mate- .rial sewed in a line parallel to the seam, and at a specified distance to one side thereof, as is required in the manufacture of stockings, hose, or other articles of a similar nature; also, to perform the above function with a knife or cutter which constantly presents fresh cuttingedges without advancing upon the material to be cut; and, nally, to provide suitable feeding devices to keep the material between the seam and the edge taut, and feed it in that condition against the sharp cutting-edge of the knife to prevent the edge being dragged down by the cutter or the cutting-edge clogged, and at the same time to separate the waste part which -has been out oft' from the rest of the goods. v In the drawings, Figure 1 is a front elevation of a sewing-machine embodying in it my invention. Fig. 2 is a plan of same with the plate removed. Fig. 3 is a perspective view of the presserfoot and its adjacent parts. Fig. 4 is a plan view of the feeds and a part ofthe plate; and Fig. 5 is a perspective view,

showing my improved knife-operating lnechv anism.

A is the bed of the sewing-machine. B is the plate. C is the looper. D is the needle.

'through which the knife or cutter H reci-procates.

O is the usual feeder-bar, and carries the usual feed, F, and my improved feed P, a`

space or slot, R, being left between them and. 6o

extending back into the feed-bar, and through which the cutter H reciprocates. The feed F is provided with teeth at right angles to the.

seam, but the feed P has its teeth at an angle thereto, as shown, so that during the feeding of the goods the threads from which the material is kuit or Woven are fed under tension, as they lie across the teeth. These feeds F and P work through slots in the plate B, that through which feed F Works being the same as heretofore used, but that one, B', through which the feed P works is used only upon machines of this construction and that set out in my patent hereinbefore specified.

N is the l'ooper-shaft, and is provided with an eccentric, M, which rocks the shaft J,

through the agency of crank K and eccentricrod L. 'lo the other end of shaft J is acrank or arm, I, carryingthe curved cutter or knife H, which is secured to it by a screw, fi, and pins i', or by any other suitable means. The cutting-edge h of the knife oreutter His concentric with the axle or shaft J, so that when the shaft J rocks the cutter is reciprocated, its cutting-edge moving in a curved line concentric with the shaft J, and the cuttingedge neither advances nor recedes. The cutter works Y through a slot, b, in the plate B, between the feeds F and P and through the slot ein the presser-foot E, which slot is open in the rear, as shown in Fig. 3.v

The operation is as follows: The machine being put in motion and the goods to be sewed and trimmed fed thereto, the same areipassed between the feeds F andP and presser-foot E, and after beingsewed by the needleD andlooper or other devices used on sewing-machines thegoods are held taut and fed against the moving cutter H, which constantly presents a new cutting-edge h and prevents clogging; and after the waste edge is severed from the article it is fed to one side of the cutter and the article passes tothe other side.

Having now described my invention, what I IOO claim as new, and desire to secure by Letters Patent, is-

1. In a trimming attachment for sewngma chines, areciprocating curved cutter or knife which constantly presents a fresh cutting-edge to the goods to be out, the cutting-edge of said cutter being concentric with its axis, in combination with means to reciprocate said cutter, substantially as and for the purpose specified.

2. In a trimming attachment for sewingmachines, a moving cutter which constantlypresents new or fresh cutting-edges to the goods t-o be cut, said cutting-edge neither advancing nor receding during the act of cutting,in combination with means t0 move said cutter, and two feeds, one ot' which is arranged on each side ot' said cutter, substantially as and for the purpose specified.

3. rIhe combination ot' cutter H, having the cutting-ed ge h concentric with its axis J, with the plate B, having slot b, and devices to rock said axis J and sew and feed the sewed goods against the cutting-edge h, substantially as and for the purpose specified.

4. The combination of the curved cutter H, having the cuttingedge h concentric with its axis J ,with presser-foot E, having slot e, open in the rear, as shown and described.

5. The combination of the curved cutter H, having the cutting-edge h concentric with its axis J, with said axis, mechanism to rock said axis J, presser-foot E, having slot c, plate B, having slot b, aud feeds F and P, one located on each side of said cutter H, as described.

G. The combination of shaft N, eccentric M, rod L, crank K, axle or shaft J, crank I, curved cutter H, having its cutting-edge h concentric with the axle J, presser-foot E, having slot e, and feeds F and I?, one located on each side of said cutter H, substantially as and for the purpose specitied.

In testimony of which invention I hereunto set my hand.

It. WILLIAM RIESS.

Witnesses:

R. M. HUNTER, R. S. CHILD, Jr. 

